165983162418240 has 112 divisors (see below), whose sum is σ = 527007852296640. Its totient is φ = 44261226588160.

The previous prime is 165983162418211. The next prime is 165983162418251. The reversal of 165983162418240 is 42814261389561.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43469455 + ... + 47133425.

Almost surely, 2^{165983162418240} is an apocalyptic number.

165983162418240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165983162418240 is an abundant number, since it is smaller than the sum of its proper divisors (361024689878400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165983162418240 is a wasteful number, since it uses less digits than its factorization.

165983162418240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3711180 (or 3711170 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 60.

The spelling of 165983162418240 in words is "one hundred sixty-five trillion, nine hundred eighty-three billion, one hundred sixty-two million, four hundred eighteen thousand, two hundred forty".